How much will Minnesota’s estate tax cost your estate, and what can you do to reduce it? Minnesota imposes a state estate tax on estates exceeding $3 million, with rates from 13% to 16%, separate from and in addition to the federal estate tax. The tax is governed by Minnesota Statutes Chapter 291, and its lower exemption threshold catches many estates that owe nothing at the federal level. For broader context on protecting your assets, see Minnesota Wills, Trusts & Estate Planning.
What Is Minnesota’s Estate Tax Exemption, and How Does It Compare to the Federal Exemption?
Minnesota exempts the first $3 million of an estate’s value from state estate tax. Estates above that threshold pay progressive rates from 13% to 16%. The federal exemption, by contrast, is $15 million per person under the One Big Beautiful Bill Act signed in 2025.
That gap matters enormously. A business owner with a $5 million estate owes zero federal estate tax but faces Minnesota tax on $2 million of value. The statute defines the Minnesota taxable estate by reference to the federal “taxable estate” under Internal Revenue Code section 2051, then applies state-specific adjustments. “The Minnesota estate tax is imposed on the Minnesota taxable estate of every decedent” (Minn. Stat. § 291.03). In plain terms: if you die as a Minnesota resident with assets above $3 million, the state collects its share regardless of what you owe (or do not owe) the IRS.
For estates that include a family farm or closely held business, Minnesota offers a qualified small business and farm property deduction of up to $2 million under Minn. Stat. § 291.03, subd. 9. That effectively raises the exemption to $5 million for qualifying estates, but strict active-use and post-transfer requirements apply.
Why Does Minnesota’s Lack of Portability Matter for Married Couples?
Federal law allows a surviving spouse to inherit the deceased spouse’s unused estate tax exemption, a concept called portability. Minnesota does not offer portability. When the first spouse dies without using the full Minnesota exemption, that unused portion is lost permanently.
Consider a married couple with a combined estate of $5 million. If the first spouse dies and leaves everything to the survivor, no Minnesota estate tax is owed at that death (the unlimited marital deduction applies). But when the surviving spouse dies, the entire $5 million estate is measured against a single $3 million exemption, generating state tax on $2 million. With proper planning, the couple could have sheltered $6 million combined.
The standard solution is a credit shelter trust (also called a bypass trust). At the first death, assets up to the exemption amount fund the trust, which benefits the surviving spouse during life but is not included in the survivor’s estate. I advise every married client whose combined estate approaches $3 million to evaluate whether a credit shelter trust belongs in their plan. For couples who also want a revocable living trust for probate avoidance, the credit shelter provision can be built into the trust terms.
How Does Minnesota’s Three-Year Gift Inclusion Rule Affect Estate Planning?
Minnesota does not impose its own gift tax, but gifts made within three years of death can be pulled back into the Minnesota taxable estate. Under Minn. Stat. § 291.016, subd. 3, “the aggregate amount of taxable gifts, as defined in section 2503 of the Internal Revenue Code, made by the decedent during the three-year period ending on the decedent’s date of death” is added to the Minnesota estate. In plain terms: large gifts that would reduce your federal taxable estate are added back for Minnesota purposes if you die within three years.
The rule targets gifts exceeding the federal annual exclusion ($19,000 per recipient in 2026). Gifts within the annual exclusion are not “taxable gifts” under federal law and therefore fall outside the inclusion rule. For business owners planning ownership transitions, this creates a strong incentive to begin transferring interests early. Waiting until a health diagnosis to gift business shares often falls within the three-year window, negating the intended tax savings.
What Are the Actual Minnesota Estate Tax Rates?
Minnesota’s estate tax uses a progressive rate structure. Estates just above the $3 million exemption pay an effective rate near 13%. As the taxable estate grows, rates climb to 16% on the largest estates. The rate schedule is set out in Minn. Stat. § 291.03, which calculates the tax as the excess of a tentative tax (computed under the Internal Revenue Code’s rate table) over a credit amount tied to the exemption.
For context: a $4 million estate (with no qualifying deductions) owes Minnesota estate tax on $1 million of value, producing a tax in the range of $130,000. A $6 million estate faces tax on $3 million, pushing the liability above $400,000. These are meaningful amounts for a business owner whose estate consists largely of illiquid assets like real estate or company stock.
Liquidity planning is essential. I regularly work with business owners who fund irrevocable life insurance trusts (ILITs) specifically to cover projected estate tax liability. The insurance proceeds stay outside the taxable estate (because the trust, not the insured, owns the policy) and provide cash to pay the tax without forcing a fire sale of the business.
How Can Business Owners Reduce Minnesota Estate Tax Exposure?
The most effective strategies combine multiple tools. Lifetime gifting reduces the gross estate, provided transfers happen more than three years before death. A credit shelter trust preserves both spouses’ exemptions. Charitable contributions reduce the taxable estate while providing income tax deductions during life.
For closely held businesses, valuation discounts for lack of marketability or minority interest can meaningfully reduce the taxable value of transferred shares. A business owner who gifts a 25% interest in a company worth $8 million does not necessarily transfer $2 million in value; defensible discounts of 20% to 35% are common. These discounts must be supported by a qualified appraisal, because the Minnesota Department of Revenue reviews them closely.
Business owners should also coordinate their wills with beneficiary designations on retirement accounts and life insurance. Mismatched designations are one of the most common estate planning failures I encounter: the will directs equal distribution among children, but the IRA beneficiary form names only one child, creating both family conflict and potential tax inefficiency.
What Happens If the Estate Includes Property in Multiple States?
Minnesota taxes the entire estate of residents domiciled in the state at death. Domicile is determined by factors including voter registration, driver’s license, time spent in the state, and the location of primary financial and social ties. Nonresidents who own Minnesota real property or tangible personal property located in Minnesota may also owe Minnesota estate tax on those assets.
For business owners who split time between Minnesota and another state (Florida and Arizona are the most common), establishing clear domicile outside Minnesota can eliminate the state estate tax entirely. But the Minnesota Department of Revenue investigates domicile claims aggressively. Casual assertions of a Florida address are not sufficient: the department examines where the taxpayer voted, where they received medical care, where their professional and social connections were centered, and where they spent the majority of their time. I advise clients considering a domicile change to build a documented record over at least a full calendar year before relying on out-of-state domicile for estate tax purposes.
For guidance on broader estate planning strategies, see Minnesota Wills, Trusts & Estate Planning or email [email protected].